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SURFACEAREAS AND VOLUMES

Authored by Manish Bhardwaj

Mathematics

9th Grade

Used 2+ times

SURFACEAREAS AND VOLUMES
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A well with 10 m inside diameter is dug 14m deep. Earth taken out of it is spread all around it to make an embankment of height 4 2/3 m. Find the width of the embankment.

5m

4m

4.3m

6m

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Area of each end in right circular hollow cylinder

π(R2−r2)\pi\left(R^2-r^2\right)

2π(R2−r2)2\pi\left(R^2-r^2\right)

πr2\pi r^2

2πr22\pi r^2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A rectangular sheet of paper 40 cm × 22 cm, is rolled to form a hollow cylinder of height 40 cm. The radius of the cylinder (in cm) is

7

3.5

807\frac{80}{7}

5

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Find the volume of the figure?

1100 in3
1600 in3
1200 in3
1500 in3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For a sphere of radius r, curved surface area of the hemisphere

2πr22\pi r^2

3πr23\pi r^2

4πr24\pi r^2

πr2\pi r^2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A cone is 8.4 cm high and the radius of its base is 2.1 cm. It is melted and recast into a sphere. The radius of the sphere is

4.2 cm

2.4 cm

2.1 cm

1.6 cm

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

Find the surface area of this figure.

148 cm²
120 cm²

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